Gateway Experience Japanese Version Hemi-Sync The Gateway Experience The Wave 1 CD case is cracked. There are no scratches on the CDs. A total of 18 CDs with instruction manuals. You can enter an altered state of consciousness just by listening. I was able to reach F12 with the Japanese introduction. I am selling this because I haven't had time to listen to it since then. Wave Ⅰ - Discovery Wave Ⅱ - Threshold Wave Ⅲ - Freedom Wave Ⅳ - Adventure Wave Ⅴ - Exploring Wave Ⅵ - Odyssey 6-volume set 3 CDs each Instruction manual included What is Hemi-Sync? It is an audio technology developed by the Monroe Institute in the United States that uses different frequencies in each ear to adjust brainwaves, thereby guiding the state of consciousness. It can lead to various states of consciousness, such as a meditative state, a state of concentration, and a relaxed state. Individual results may vary. Please contact me if you would like to purchase with other CDs. A small discount is possible.